css from ubuntu_kvm_unit_tests failed on B-4.15 / F-5.4 s390x (Unaligned MB origin: Program interrupt: expected(21) == received(0))

[Po-Hsu Lin]

Issue found on s390x zVM and LPAR.

Test failed with:
 FAIL: Channel Subsystem: measurement block format1: Unaligned MB origin: Program interrupt: expected(21) == received(0)
 FAIL: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 0 set: Program interrupt: expected(21) == received(0)
 FAIL: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 1 set: Program interrupt: expected(21) == received(0)

Test log:
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/css'
 BUILD_HEAD=35a22051
 timeout -k 1s --foreground 90s /usr/bin/qemu-system-s390x -nodefaults -nographic -machine s390-ccw-virtio,accel=kvm -chardev stdio,id=con0 -device sclpconsole,chardev=con0 -kernel /tmp/tmp.2yImImtRli -smp 1 -device virtio-net-ccw # -initrd /tmp/tmp.DiudHC4BLJ
 qemu-system-s390x: warning: 'apqci' requires 'ap'.
 qemu-system-s390x: warning: 'apft' requires 'ap'.
 qemu-system-s390x: warning: nic virtio-net-ccw.0 has no peer
 INFO: Channel Subsystem: initialize CSS (chsc): General features: 6,7,45,46,47,48,51,108,
 INFO: Channel Subsystem: initialize CSS (chsc): CHSC features: 1,109,
 PASS: Channel Subsystem: initialize CSS (chsc): Store Channel Characteristics
 INFO: Channel Subsystem: enumerate (stsch): Found subchannel 00010000
 INFO: Channel Subsystem: enumerate (stsch): Tested subchannels: 1, I/O subchannels: 1, I/O devices: 1
 PASS: Channel Subsystem: enumerate (stsch): Schid of first I/O device: 0x00010000
 PASS: Channel Subsystem: enable (msch): Enable subchannel 00010000
 INFO: Channel Subsystem: sense (ssch/tsch): stsch: sch 00010000 already enabled
 INFO: Channel Subsystem: sense (ssch/tsch): reserved 0xff cu_type 0x3832 cu_model 0x01 dev_type 0x0000 dev_model 0x00
 PASS: Channel Subsystem: sense (ssch/tsch): cu_type expected 0x3832 got 0x3832
 INFO: Channel Subsystem: measurement block (schm): Extended measurement block available
 PASS: Channel Subsystem: measurement block (schm): Unaligned operand: Program interrupt: expected(21) == received(21)
 PASS: Channel Subsystem: measurement block (schm): Bad flags: Program interrupt: expected(21) == received(21)
 PASS: Channel Subsystem: measurement block (schm): Privilege: Program interrupt: expected(2) == received(2)
 PASS: Channel Subsystem: measurement block (schm): Normal operation: SCHM call without address
 PASS: Channel Subsystem: measurement block format0: Valid MB address and index 0: SSCH measured 10
 PASS: Channel Subsystem: measurement block format0: Valid MB address and index 1: SSCH measured 10
 FAIL: Channel Subsystem: measurement block format1: Unaligned MB origin: Program interrupt: expected(21) == received(0)
 PASS: Channel Subsystem: measurement block format1: Valid MB origin: SSCH measured 10
 PASS: Channel Subsystem: msch: Unaligned: 1: Program interrupt: expected(6) == received(6)
 PASS: Channel Subsystem: msch: Unaligned: 2: Program interrupt: expected(6) == received(6)
 FAIL: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 0 set: Program interrupt: expected(21) == received(0)
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 0 set: STSCH succeeded
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 0 set: Clear on STSCH
 FAIL: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 1 set: Program interrupt: expected(21) == received(0)
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 1 set: STSCH succeeded
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 1 set: Clear on STSCH
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 6 set: Program interrupt: expected(21) == received(21)
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 6 set: STSCH succeeded
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 6 set: Clear on STSCH
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 7 set: Program interrupt: expected(21) == received(21)
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 7 set: STSCH succeeded
 PASS: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 7 set: Clear on STSCH
 PASS: Channel Subsystem: stcrw: Unaligned: 1: Program interrupt: expected(6) == received(6)
 PASS: Channel Subsystem: stcrw: Unaligned: 2: Program interrupt: expected(6) == received(6)
 PASS: Channel Subsystem: stcrw: No CRW available initally: No CRW available: cc == 1
 PASS: Channel Subsystem: stcrw: No CRW available initally: No CRW available: stored zeroes in crw
 PASS: Channel Subsystem: stcrw: Generate CRW: rhcp cc != 0
 PASS: Channel Subsystem: stcrw: CRW available: cc is zero
 PASS: Channel Subsystem: stcrw: CRW available: stored crw
 PASS: Channel Subsystem: stcrw: CRW available: CRW has Channel Path RSC
 PASS: Channel Subsystem: stcrw: No more CRWs pending: No CRW available: cc == 1
 PASS: Channel Subsystem: stcrw: No more CRWs pending: No CRW available: stored zeroes in crw
 PASS: Channel Subsystem: ssch: Unaligned: 1: Program interrupt: expected(6) == received(6)
 PASS: Channel Subsystem: ssch: Unaligned: 2: Program interrupt: expected(6) == received(6)
 PASS: Channel Subsystem: ssch: Invalid ORB: Program interrupt: expected(21) == received(21)
 PASS: Channel Subsystem: stsch: Unaligned: 1: Program interrupt: expected(6) == received(6)
 PASS: Channel Subsystem: stsch: Unaligned: 2: Program interrupt: expected(6) == received(6)
 PASS: Channel Subsystem: stsch: Invalid subchannel number: Channel not operational
 PASS: Channel Subsystem: stsch: Bit 47 in SID is zero: Program interrupt: expected(21) == received(21)

 Unexpected program interrupt : 0x15 on cpu 0 at 0x120a4, ilen 4

 GPRS:
 0000000000000020 0000000000010000 0000000000001c81 0000000000000000
 000000000001208e 000000000003fd38 0000000000000000 0000000000000000
 0000000000000000 0000000000000000 0000000000000000 0000000000001881
 000000000002d0b0 0000000000000000 000000000001208e 000000000003fe20

     STACK: 16464 1109a 1208e 1208e 1b0c0 10100

 SUMMARY: 43 tests, 3 unexpected failures

 EXIT: STATUS=127
 FAIL css (43 tests, 3 unexpected failures)

[Po-Hsu Lin (cypressyew)]

Can be found on Groovy 5.8.0-56.63-generic s390x s2lp4 / kernel03

[Po-Hsu Lin (cypressyew)]

Can be found on Focal 5.4.0-75.84-generic s390x s2lp4 / kenrel04

[Po-Hsu Lin (cypressyew)]

Can be found on Bionic 4.15.0-145.149-generic s390x s2lp3 / kernel02

[Kleber Sacilotto de Souza (kleber-souza)]

Observed with focal/linux: 5.4.0-76.85.

[Po-Hsu Lin (cypressyew)]

Found on hirsute 5.11.0-24.25-generic

[Po-Hsu Lin (cypressyew)]

With kvm-unit-test repo updated to d8a4f9e5 (ci: Update the list of tests that we run in the Fedora Cirrus-CI), this test is still failing but the error message is different, I will update the bug description.

[Po-Hsu Lin (cypressyew)]

On Jammy 5.15 s390x, this test is just failing with these 2 failures on both of our s390x instances:

  FAIL: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 0 set: Program interrupt: expected(21) == received(0)
  FAIL: Channel Subsystem: msch: Invalid SCHIB: PMCW flag bit 1 set: Program interrupt: expected(21) == received(0)